The bank had posted a net profit of Rs 4,642.6 crore in the October-December quarter of the last fiscal.

Total income rose to Rs 30,811.27 crore during the December quarter from Rs 24,450.44 crore in the year-ago period, HDFC Bank said in a statement.

"Net interest income (interest earned less interest expended) for the quarter ended December 31, 2018 grew by 21.9 per cent to Rs 12,576.8 crore, from Rs 10,314.3 crore for the quarter ended December 31, 2017, driven by asset growth of 23.7 per cent and a core net interest margin for the quarter of 4.3 per cent," it said.

During the quarter, gross non-performing assets (NPAs) rose to 1.38 per cent of the total advances, compared with 1.29 per cent at the end of the third quarter of 2017-18.

The bank earned a total income of Rs 85,393.5 crore as against Rs 69,912.0 crore in the corresponding period of the previous year.

It said total balance sheet size as of December 31, 2018 was Rs 11,68,556 crore as against Rs 9,49,079 crore as of December 31, 2017.

Total deposits rose by 22 per cent to 8,52,502 crore, while total advances grew by 24 per cent Rs 7,80,951 crore.

The lender's total Capital Adequacy Ratio (CAR) as per Basel III guidelines was at 17.3 per cent as on December 31, 2018 (15.5 per cent as on December 31, 2017) as against a regulatory requirement of 11.025 per cent, which includes Capital Conservation Buffer of 1.875 per cent, and an additional requirement of 0.15 per cent on account of the bank being identified as a Domestic Systemically Important Bank (D-SIB).